ES350529A1 - Continuous method for degasifying and cleaning aqueous suspensions of fibrous materials - Google Patents
Continuous method for degasifying and cleaning aqueous suspensions of fibrous materialsInfo
- Publication number
- ES350529A1 ES350529A1 ES350529A ES350529A ES350529A1 ES 350529 A1 ES350529 A1 ES 350529A1 ES 350529 A ES350529 A ES 350529A ES 350529 A ES350529 A ES 350529A ES 350529 A1 ES350529 A1 ES 350529A1
- Authority
- ES
- Spain
- Prior art keywords
- line
- centrifugal separator
- suspension
- pump
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/26—De-aeration of paper stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0068—General arrangements, e.g. flowsheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Paper (AREA)
Abstract
Gaseous and solid components are continuously removed from liquid suspensions of fibres, e.g. of cellulosic pulp, by pumping the suspension from a storage tank into a degasifier with a vacuum chamber in which the suspension is degassed by boiling it at reduced pressure, and then pumping the suspension to a centrifugal separator to remove solids, whilst keeping out air or other gases, and then dewatering the suspension. As shown, the suspension is fed through inlet 2 to vat 1, 'the liquid level 4 being kept constant by weir 3. Suspension is drawn off by pump 6 through line 5, and further fibre may be added at 7. It then passes through line 8 to vacuum degasifier 9, through lines 10 and 16 to pump 11, through line 12 to centrifugal separator 13, and through line 14 to dewatering apparatus 15. White water may be returned through line 17 to the inlet 2. Rejects from the separator 13 pass through line 18 and pump 19 to a second centrifugal separator 20, rejects from which leave the system at 22. Accepts from separator 20 are recycled through line 21 to line 5. The suction sides of the three pumps are connected through lines 23 and 16, so that all are at the same pressure, and are arranged so that liquid flows are in the directions shown. Screens may optionally be inserted at 24. Another embodiment (Fig. 2, not shown) differs in the following respects: there are two degasifiers (9a and 9b), and additional fibre is supplied to the inlet only of the former the whole output of degasifier (9a), and part of that of 9b proceed to the primary centrifugal separator, part of the rest of the output from 9b being returned to the vat (1a), part through a line (26a) and combined with the output from the primary centrifugal separator and pumped to the dewatering apparatus (15a) and part through a line (23a) to a pump (19a) which combines it with the rejects from the primary centrifugal separator and feeds them to the secondary centrifugal separator and accepts from the secondary centrifugal separator and sent directly to the pump 11a feeding the primary separator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE02270/67A SE330826B (en) | 1967-02-17 | 1967-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES350529A1 true ES350529A1 (en) | 1969-05-01 |
Family
ID=20259664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES350529A Expired ES350529A1 (en) | 1967-02-17 | 1968-02-15 | Continuous method for degasifying and cleaning aqueous suspensions of fibrous materials |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3513971A (en) |
| AT (1) | AT288847B (en) |
| BE (1) | BE710853A (en) |
| CH (1) | CH468841A (en) |
| CS (1) | CS152453B2 (en) |
| DE (1) | DE1719487A1 (en) |
| DK (1) | DK121738B (en) |
| ES (1) | ES350529A1 (en) |
| FI (1) | FI51227C (en) |
| FR (1) | FR1563060A (en) |
| GB (1) | GB1209332A (en) |
| NL (1) | NL6802226A (en) |
| SE (1) | SE330826B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4455224A (en) * | 1979-03-19 | 1984-06-19 | Clark & Vicario Corporation | Apparatus for treating a papermaking suspension |
| US4478615A (en) * | 1982-09-29 | 1984-10-23 | Clark & Vicario Corporation | Deaerated liquid stock supply |
| US4443232A (en) * | 1982-09-29 | 1984-04-17 | Clark & Vicario Corporation | Deaerated liquid stock supply |
| SE451736B (en) * | 1983-09-19 | 1987-10-26 | Nils Anders Lennart Wikdahl | WHEN WATERING A WATER SUSPENSION CONTAINING CELLULOSA FIBERS |
| US9902440B2 (en) * | 2015-12-17 | 2018-02-27 | Fca Us Llc | Adjustable spare tire carrier |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2685937A (en) * | 1949-08-15 | 1954-08-10 | Rotareald Corp | Deaerating a susp ension of cellulosic fibers |
| US2931503A (en) * | 1953-04-21 | 1960-04-05 | Clark & Vicario Corp | Conditioning paper-making stock |
| US3007542A (en) * | 1957-06-18 | 1961-11-07 | Salvatore W Giampapa | Degasifier |
| US3019901A (en) * | 1959-07-01 | 1962-02-06 | Bauer Bros Co | Vacuum receiver and separator |
| US3206917A (en) * | 1961-10-04 | 1965-09-21 | Clark & Vicario Corp | Deaerated stock flow control |
| US3237763A (en) * | 1962-07-06 | 1966-03-01 | Wikdahl Nils Anders Lennart | Method and apparatus for concentrating fibrous suspensions |
-
1967
- 1967-02-17 SE SE02270/67A patent/SE330826B/xx unknown
-
1968
- 1968-02-12 AT AT131068A patent/AT288847B/en not_active IP Right Cessation
- 1968-02-13 CH CH213368A patent/CH468841A/en unknown
- 1968-02-15 ES ES350529A patent/ES350529A1/en not_active Expired
- 1968-02-15 FI FI680402A patent/FI51227C/en active
- 1968-02-16 GB GB7960/68A patent/GB1209332A/en not_active Expired
- 1968-02-16 BE BE710853D patent/BE710853A/xx unknown
- 1968-02-16 DE DE19681719487 patent/DE1719487A1/en active Pending
- 1968-02-16 CS CS1215A patent/CS152453B2/cs unknown
- 1968-02-16 NL NL6802226A patent/NL6802226A/xx unknown
- 1968-02-16 DK DK62168AA patent/DK121738B/en unknown
- 1968-02-16 US US706084A patent/US3513971A/en not_active Expired - Lifetime
- 1968-02-18 FR FR1563060D patent/FR1563060A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH468841A (en) | 1969-02-28 |
| NL6802226A (en) | 1968-08-19 |
| SE330826B (en) | 1970-11-30 |
| US3513971A (en) | 1970-05-26 |
| GB1209332A (en) | 1970-10-21 |
| BE710853A (en) | 1968-07-01 |
| AT288847B (en) | 1971-03-25 |
| FR1563060A (en) | 1969-04-11 |
| DK121738B (en) | 1971-11-22 |
| FI51227C (en) | 1976-11-10 |
| FI51227B (en) | 1976-08-02 |
| CS152453B2 (en) | 1973-12-19 |
| DE1719487A1 (en) | 1972-02-10 |
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